Road-traffic noise zones

road_noise_zones10 fields10 of these fields open in the demo

Source: Statens vegvesen Støykartlegging T-1442
Geography: Around the address
Reported stale after: 120 days
Access: Requires an API key granted this section
Contract version: 1
In packages: environment_nuisance

What this does not say

Quoted verbatim from the section’s warnings field, exactly as the API returns it. They are not translated: a translation would show something other than what your response actually contains.

Strategic noise mapping of state/county roads (rød sone Lden ≥ 65 dB, gul sone ≥ 55 dB); municipal roads and façade-level values are not included.
calculated_year is the prognosis year of the noise model (T-1442 mapping is computed for a forecast year, typically 2040 for roads), not the year of a measurement or of publication.
Straight-line EPSG:25833 distances from the address point to the feature; not travel distance. Source features are imported as published, with their own accuracy and update cadence; updated_at is our import time.

Fields

2 of 10 fields are value fields — the ones that decide whether a record actually says anything. The rest are context: identifiers, codes and timestamps. Fields marked “open” return values to anonymous callers; the rest require a key.

Field	Type	Role	Demo
feature_id	string \| null	context	open
label	string \| null	context	open
municipality_code	string \| null	context	open
updated_at	string \| null	context	open
noise_zone_category	string \| null	context	open
noise_source	string \| null	context	open
method	string \| null	context	open
calculated_year	integer \| null (årstall)	context	open
straight_line_distance_m	integer \| null (m)	value	open
contains_address	boolean \| null	value	open

Fetch this section

curl -H "X-API-Key: $APPROACH_API_KEY" \
  "https://api.approach.no/api/v1/addresses/285717643?include=road_noise_zones"

# paginated, one section at a time
curl -H "X-API-Key: $APPROACH_API_KEY" \
  "https://api.approach.no/api/v1/addresses/285717643/sections/road_noise_zones?limit=25"

Try it now

This is a real call against the public demo, from here. What appears below is what the API returned — not a sample.